Key ring



FIG. 1 is a top and side perspective view showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a side elevational view thereof of the side opposite to that shown in FIG. 2; and,

FIG. 4 is an end view thereof taken from the right side to that shown in FIG. 2. 

The ornamental design for a key ring, as shown and described. 